Welcome Guest! If you are already a member of the BMW MOA, please log in to the forum in the upper right hand corner of this page. Check "Remember Me?" if you wish to stay logged in.

We hope you enjoy the excellent technical knowledge, event information and discussions that the BMWMOA forum provides.
Why not take the time to join the club, so you can enjoy posting on
the forum, the club magazine, and all of the discounts and benefits the BMWMOA offers?Want to read the MOA monthly magazine for free? Take a 3-month test ride of the magazine; check here for details.

If this is your first visit, be sure to
check out the FAQ by clicking the
link above. You will need to join the MOA before you can post: click this register link to proceed. To start viewing messages,
select the forum that you want to visit from the selection below.

NOTE. Some content will be hidden from you. If you want to view all content, you must register for the forum if you are not a member, or if a member, you must be logged in.

Hybrid View

Removal of air injection system

I recently purchased a 1982 R65. After getting better aquainted with the bike I noticed the pulse air injection system (pipes) at both sides of the engine. I don't like the look plus after some research I found that the system was installed mainly on US bikes due to air quality issues in California. In any case I want to remove the system. The remaval should not impact the operation of the engine, in fact it may be beneficial.The process appears to be simple and easy. Has anyone gone through the process? Any recommondations or suggestions?

Plugs in the cylinder head

My recommendation based on experience is to lockwire the plugs that you use in the cylinder heads. If you decide not to, you better carry a spare. I had one fall out coming home from Nova Scotia. I was not easy finding one so i could make it home.

I removed the system from my bike over 20 years ago. It's very simple. You can buy a plug from your BMW dealer that will fit were the pipe is removed from the cylinder head. I believe that it is made for some other purpose but fits the threaded hole in the head fine. Sorry, I don't remember what its original purpose is for. As for the air box end, a timing hole cover rubber plug will fit just fine. Remove all of the extra stuff in the airbox also.

I seem to remember that it was claimed that the air injection system caused extra heat on the exhaust valve.

2004 R1150RT 151,500 miles , 1991 K100LT 128,000 miles, 1982 R100RT 106,900 miles
Total 386,400 BMW miles
AMA,BMWRA,BMWMOA
The cheapest thing on a BMW is the nut that connects the handlebars to the seat.